Domestic appliance device and refrigeration appliance having the domestic appliance device

ABSTRACT

A domestic appliance device, in particular a domestic refrigeration appliance device, has an appliance body which defines at least one storage space, at least one insertion unit which is movable at least partially parallel to a direction of insertion into the storage space and parallel to a direction of extension out of the storage space, and at least one coupling unit which couples the insertion to the appliance body. The coupling unit has at least one roller rail and at least one roller element cooperating with the roller rail. In order to achieve greater ease of operation, the roller element is fastened to the appliance body.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit, under 35 U.S.C. § 119, of Germanpatent application DE 10 2016 221 940.5, filed Nov. 9, 2016; the priorapplication is herewith incorporated by reference in its entirety.

BACKGROUND OF THE INVENTION Field of the Invention

The invention relates to a domestic appliance device, in particular adomestic refrigeration appliance device.

A refrigerator containing a temperature-insulated appliance body whichdefines a storage space is disclosed in U.S. Pat. No. 9,250,008 B2. Thestorage space is divided into a plurality of partial storage spaces,wherein a drawer is arranged in at least one of these partial storagespaces. The drawer is able to be moved out of the storage space or intothe storage space. The movement of the drawer is guided via a couplingunit with two coupled toothed wheels and associated toothed rods,wherein the toothed rods are fixed securely to the side walls of theappliance body and the toothed wheels which are arranged on the drawerfollow the horizontal movement of the drawer. As a result, the drawer iscentered in its insertion compartment.

SUMMARY OF THE INVENTION

The object of the invention is, in particular, to provide a genericdevice with improved properties with regard to ease of operation. Theobject is achieved according to the invention by the features of themain claim, while advantageous embodiments and developments of theinvention may be derived from the subclaims.

The invention is based on a domestic appliance device, in particular adomestic refrigeration appliance device, containing an appliance bodywhich defines at least one storage space. At least one insertion unitwhich is movable at least partially parallel to a direction of insertioninto the storage space and parallel to a direction of extension out ofthe storage space is provided. At at least one coupling unit couples theinsertion unit to the appliance body and contains at least one rollerrail and at least one roller element cooperating with the roller rail.

It is proposed that the roller element is fastened, in particularindirectly, to the appliance body, whereby in particular the ease ofoperation may be increased. In particular, an improved use of space maybe achieved since the roller element is advantageously located in afixed manner in the storage space and does not have to be moved throughthe storage space when the insertion unit is moved. Instead, when theinsertion unit is moved, the roller rail is advantageously moved throughthe storage space. The roller rail, however, may be connected to theinsertion unit in an advantageous and expedient manner and with a lowspace requirement. Advantageously with such an arrangement, no storagespace is lost and the space located above the insertion unit in theinstallation direction is thus able to be assigned fully to theinsertion unit, for example. Moreover, in particular, an increasedstability of the arrangement may be achieved by fastening the rollerelement to the stable appliance body.

“Domestic appliance device”, in particular, is intended to be understoodas a component, in particular an operative component, in particular asub-assembly and/or a structural and/or functional component of adomestic appliance. “Domestic appliance” is intended to be understood,in particular, as an electrical appliance, or alternatively and/oradditionally as a gas-operated or oil-operated appliance which isprovided to be used in the home, in particular for carrying out and/orassisting domestic work, advantageously a cooking process and/or acleaning process, and/or is provided to store food, in particular undercontrolled conditions. The domestic appliance may, in particular, be adishwasher and/or a cooker and/or an oven and/or a microwave oven and/ora steam cooker and/or an extractor hood and/or an electric grill and/ora toaster and/or a laundry dryer and/or a washing machine and/orparticularly preferably a refrigeration appliance and/or freezerappliance.

Preferably, the storage space is configured as an internal volume whichis at least partially defined and/or separated by an insulated appliancebody and which, in particular, may be provided for storing refrigeratedgoods, for example food, chemicals and/or medical materials. Inparticular, the insertion unit contains a storage element having a mainextension plane which is located, in particular, parallel to thedirection of insertion and preferably horizontally and which, inparticular, is provided for storing objects, in particular refrigeratedgoods. The “main extension plane” of an object is intended to beunderstood, in particular, as a plane which is parallel to a longestside surface of a smallest imaginary cuboid which only just completelysurrounds the structural unit and, in particular, extends through thecentral point of the cuboid. The storage element in this case may beconfigured as a storage base and/or as a storage rack. Additionally, theinsertion unit, in particular, may contain at least one, advantageouslyat least two, particularly advantageously at least three and preferablyat least four, side walls which, in particular, may be connected to thestorage element and which, in particular, in each case may have maindirections of extension which are aligned perpendicular to the maindirection of extension of the storage element. The expression“perpendicular” is intended here, in particular, to define an alignmentof a direction relative to a reference direction, wherein the directionand the reference direction, in particular viewed in a plane, enclose anangle of 90° and the angle has a maximum deviation of, in particular,less than 8°, advantageously less than 5° and particularlyadvantageously less than 2°. In one advantageous embodiment of theinvention, the insertion unit may be configured as a drawer, wherein thedrawer may be closed at the top by a cover. A “main direction ofextension” of an object in this case is intended to be understood, inparticular, as a direction which extends parallel to a longest edge of asmallest geometric cuboid which only just completely encloses theobject.

The coupling unit may advantageously have further elements provided forguiding the insertion unit in or counter to the direction of insertion,such as for example an arrangement of guide rails. “Roller rail” isintended to be understood, in particular, as an element which providesat least one roller surface, preferably in at least one direction for atleast one roller element. Preferably, the roller rail may be configuredas an at least substantially elongated element. The expression“elongated” is intended here, in particular, to be understood in thesense of a longitudinal extent of an object in its main direction ofextension, wherein the longitudinal extent of the object is inparticular ten times, preferably twenty times, particularly preferablythirty times greater than an associated transverse extent of thecomponent. The longitudinal extent of the rail element is preferablyintended to correspond at least to the depth of the storage spacemeasured in the direction of insertion. The roller rail may preferablybe arranged at least parallel to the direction of extension and may beat least substantially linear. Deviations from parallelism and/orlinearity may be advantageous in order to achieve a dynamic which, forexample, may prevent inadvertent and complete withdrawal of theinsertion unit and/or may permit a more secure fit of the insertion unitin the fully inserted state.

“Roller element” is intended to be understood, in particular, as anelement which is rotatably mounted about a pivot pin and whichpreferably is rotationally symmetrical to a pivot pin. Advantageously,the roller element, in particular, may be non-positively and/orpositively in contact with the roller rail and, in particular, isbrought into rotation by a movement of the roller rail in or counter tothe direction of insertion and at the same time rolls, in particular,along the roller rail. By “fastened” is intended to be understood, inparticular, that in the use state and/or operating state the connectionexists between the roller element and the appliance body along the pivotpin of the roller element. To this end, a pivot pin element is, inparticular, at least mechanically connected, preferably integrallyconnected, to the appliance body. “Pivot pin element” is intended to beunderstood as an element which, in particular, may be part of thecoupling unit. In the use state and/or operating state it cooperates, inparticular, with the center of the roller element on the axis ofrotational symmetry thereof, about which the roller element is able torotate, wherein, in particular, a rotation of the roller element about apivot pin is not intended to be prevented by means of the connection.

“Provided” is intended to be understood, in particular, as beingspecifically designed and/or equipped. By an object being provided for aspecific function it is intended to be understood, in particular, thatthe object fulfills and/or performs this specific function in at leastone use state and/or operating state.

Moreover, it is proposed that the roller element is configured as atoothed wheel and the roller rail is configured as a toothed rod,whereby an advantageous positive connection between the roller elementand the roller rail may be achieved. In particular, clearance and apossible twisting of the insertion unit associated therewith may beavoided, in particular during insertion and/or extension. Additionally,in particular, a coupling by means of the toothed wheel and toothed rodmay permit a more uniform force requirement during an insertion and/orextension process, whereby, in particular, a centering of the insertionunit may be achieved during an insertion and/or extension process.Advantageously, the toothed rod extends relative to the direction ofinsertion over an entire depth of the insertion unit, whereby, inparticular, a large extension range may be achieved.

Additionally, it is proposed that the coupling unit contains at leastone further roller rail and at least one further roller elementcooperating with the further roller rail. The roller element and thefurther roller element are preferably configured and/or arrangedmirror-symmetrically to one another. The roller rail and the furtherroller rail are preferably configured and/or arrangedmirror-symmetrically to one another. As a result, the weight of theinsertion unit may be advantageously distributed over a plurality ofroller rails and/or roller elements. Additionally, a more accurateguidance of the insertion unit may be advantageously permitted in thedirection of insertion or extension.

If the roller element and the further roller element are mechanicallycoupled together, a transmission of a rotational movement from oneroller element to another roller element may be advantageously achieved,whereby, in particular, twisting of the insertion unit during insertionand/or extension may be advantageously avoided. In this case, inparticular, the roller element and the further roller element areconnected fixedly in terms of rotation to one another, for example via aconnecting element, in particular a rod, of the coupling unit. As aresult, for example, a uniform movement of two opposing edges of theinsertion unit may be achieved when, as in an advantageous embodiment ofthe invention, in each case a roller rail is configured on onerespective edge of the insertion unit. In this case, in particular, aportion of a force which, for example, is exerted on one side of theinsertion unit in the direction of extension may be advantageouslytransmitted via a rotational movement of the coupled roller elements tothe other side.

In a further embodiment of the invention, it is proposed that the rollerrail is connected to a lower face of the insertion unit. In this case,the roller rail is oriented, in particular, away from the insertionunit. “Lower face” of the insertion unit is intended to be understood,in particular, as the side of the insertion unit which opposes a storageelement surface of the insertion unit, wherein the storage elementsurface is intended to be, in particular, a surface of the insertionunit on which goods, in particular refrigerated goods, may be deposited.By such an embodiment, an improved overall appearance may beadvantageously achieved since the roller rail preferably at leastpartially disappears from the field of view of an observer. Moreover, inparticular it is possible to avoid the collection of dirt on the rollerrail since in this case, in particular, the roller rail is orienteddownwardly and therefore it is difficult for dirt to remain adheredthereto. As a result, and due to the ability to reach the lower face ofthe insertion unit easily, in particular, easier and more rapid cleaningmay be permitted and thus also preferably improved hygiene conditionsmay be achieved. Advantageously, the roller rail is connected fixedly,in particular integrally, to the lower face. “Integrally” is intended tobe understood, in particular, as being connected at least by a materialconnection, for example by a welding process, an adhesive bondingprocess, an injection-molding process and/or a further process whichappears expedient to the person skilled in the art, and/oradvantageously formed in one piece such as for example by producing froma cast product and/or by producing in a single-component ormulti-component injection-molding method and advantageously from asingle blank.

In one advantageous embodiment of the invention, the domestic appliancedevice contains at least one cover element which, viewed in thedirection of insertion, is arranged upstream of the roller element and,in particular, covers this roller element, in particular at the front.As a result, in particular, an improved overall appearance andpreferably increased operator safety may be achieved, since the rollerelement preferably at least partially disappears from the field of viewof the observer, whereby in particular a risk of injury, for example bythe trapping and/or squashing of body parts, in particular of fingers,may be reduced. Additionally, soiling of the roller element may beadvantageously at least partially prevented.

Moreover, it is proposed that the cover element extends between a firstside wall of the appliance body and a second side wall of the appliancebody opposing the first side wall, wherein in an operating state bothside walls are advantageously arranged at least substantiallyperpendicular relative to a horizontal plane. As a result, a supportingand/or load-bearing effect of the cover element may be advantageouslyachieved, in particular relative to the insertion unit. Moreover, bysuch a cover element a stabilizing effect may be achieved on theappliance body. Additionally, in particular, an improved overallappearance may be achieved since, in particular, all components locatedbehind the cover element, such as for example the roller element,preferably at least partially disappear from the field of view of theobserver. Additionally, in particular, dirt from outside may be at leastpartially kept away from all of the components located behind the coverelement. As a result, in particular, improved hygiene conditions may beachieved.

If the cover element forms a part of the appliance body, an increasedstability of the appliance body may be advantageously achieved.

Advantageously, the cover element divides the storage space into atleast one first partial storage space and at least one second partialstorage space. In an operating state, the first partial storage space ispreferably located vertically above the second partial storage spaceand, in particular, above all further partial storage spaces present.Advantageously, the cover element is designed in a plate-like manner,wherein “plate-like” is intended to be understood, in particular, ascontinuous and free of recesses and/or holes which could connect thepartial storage spaces. As a result, a subdivision of the storage spaceinto different usable regions may be advantageously undertaken. Forexample, in particular, odor-intensive refrigerated goods may be storedseparately from less odor-intensive refrigerated goods and/oradvantageously regions with different refrigerating temperatures couldbe separated.

Advantageously, the cover element may be part of the appliance body.Alternatively, the cover element in particular may be inserted in aseparate mounting step into the appliance body. In this case, the coverelement may preferably consist of the same material as the appliancebody or from a different, preferably thermally-insulating, material.“Thermally-insulating material” is intended to be understood, inparticular, as a material with a low thermal conductivity, which inparticular is less than 0.15 Wm-1K-1, preferably less than 0.05 Wm-1K-1or particularly preferably less than 0.005 Wm-1K-1.

It is also proposed that the roller element is at least partiallyembedded in the cover element. The expression “embedded” is intended tobe understood here, in particular, as largely enclosed by an envelope ofthe cover element, wherein, in particular, more than 50% of a volume ofthe roller element, preferably more than 65% of the volume of the rollerelement and particularly preferably more than 80% of the volume of theenvelope of the roller element are intended to be located inside thevolume of the envelope of the cover element. The “envelope” of an objectis intended to be understood, in particular, in this case as a surfaceof a smallest imaginary cuboid which only just completely encloses theobject. As a result, space may be advantageously saved. Moreover, inparticular, an improved overall appearance and advantageously increasedoperator safety may be achieved, since the roller element advantageouslydisappears at least partially from the field of view of the observer,whereby in particular a risk of injury, for example by the trappingand/or squashing of fingers, may be reduced. Additionally, inparticular, dirt may be kept at least partially away from the rollerelement. As a result, in particular improved hygiene conditions may beachieved.

In one advantageous embodiment of the invention, it is proposed that,relative to the direction of insertion, the roller element is arrangedin a first half, in particular in a first third and preferably in afirst quarter, of the appliance body. As a result, advantageously alarge extension range of the insertion unit may be achieved, inparticular without a lengthening of the roller rail being necessary.

Advantageously, the insertion unit is configured as a drawer. The drawerin the inserted state, in particular, may be located entirely in theinterior of the storage space or advantageously it may extend onlypartially into the interior of the storage space and/or over at leastone side wall it may form an external boundary of the storage space. Inparticular, the drawer may contain a door leaf which forms an externalwall, whereby advantageously a reduction in material and costs may beachieved since, in particular, a refrigeration appliance door may bedispensed with, in particular in the region of the drawer.

The domestic appliance and/or the domestic appliance device according tothe invention in this case is/are intended not to be limited to theabove-described use and embodiment. In particular the domestic applianceaccording to the invention and/or the domestic appliance deviceaccording to the invention, in order to fulfill a function describedherein, may have a number of individual elements, components and unitsand method steps which deviates from a number cited herein.Additionally, within the value ranges specified in this disclosure,values which are also within the cited limits are intended to beregarded as disclosed and able to be used in any manner.

Other features which are considered as characteristic for the inventionare set forth in the appended claims.

Although the invention is illustrated and described herein as embodiedin a domestic appliance device, it is nevertheless not intended to belimited to the details shown, since various modifications and structuralchanges may be made therein without departing from the spirit of theinvention and within the scope and range of equivalents of the claims.

The construction and method of operation of the invention, however,together with additional objects and advantages thereof will be bestunderstood from the following description of specific embodiments whenread in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

FIG. 1 is a diagrammatic, perspective view of a domestic appliance witha domestic appliance device which contains an appliance body accordingto the invention;

FIG. 2 is a detail of a perspective view of the domestic appliance,focusing on a coupling unit of the domestic appliance device which isprovided for coupling an insertion unit of the domestic appliance deviceto the appliance body;

FIG. 3 is a horizontal sectional view through the appliance body and abottom view of the insertion unit;

FIG. 4 is a partial bottom view of the insertion unit in an enlargedscale, focusing on a roller rail and a roller element of the couplingunit;

FIG. 5 is a vertical sectional view through the appliance body and theinsertion unit in a direction of insertion; and

FIG. 6 is a vertical sectional view through an appliance body and aninsertion unit in a direction of insertion of a further domesticappliance device.

DETAILED DESCRIPTION OF THE INVENTION

Referring now to the figures of the drawings in detail and first,particularly to FIG. 1 thereof, there is shown a domestic appliance. Thedomestic appliance is configured as a domestic refrigeration appliance.The domestic appliance has a domestic appliance device. The domesticappliance device contains an appliance body 10 a which defines thedomestic appliance outwardly on five sides. The appliance body 10 aserves as temperature insulation of a storage space 12 a located in theinterior.

The domestic appliance device has two insertion units 14 a, 16 a. Afront face of the domestic appliance in this exemplary embodiment formstwo door leaves 42 a, 62 a which belong to the insertion units 14 a, 16a and which serve for insulating the storage space 12 a located in theinterior and in each case contain a door handle 44 a, 64 a. Viewed inthe direction of installation, a refrigeration appliance door 40 a ofthe domestic appliance device is located below the lower insertion unit16 a. The refrigeration appliance door 40 a is fastened at leastpartially to the appliance body 10 a. The refrigeration appliance door40 a may, in particular, be pivotably mounted about an axis locatedsubstantially perpendicular to a direction of insertion 18 a of theinsertion units 14 a, 16 a and serves for the insulation of the storagespace 12 a located on the inside.

The insertion unit 14 a is configured identically to the insertion unit16 a. Hereinafter, therefore, only the insertion unit 14 a is described.

The insertion unit 14 a may be moved in the direction of insertion 18 arelative to the appliance body 10 a. Additionally, the insertion unit 14a may be moved in a direction of extension 20 a relative to theappliance body 10 a. In this case, the insertion unit 14 a moves intothe storage space 12 a and/or out of the storage space 12 a. Thesemovements take place at least partially parallel to the direction ofinsertion 18 a and/or direction of extension 20 a. The door leaf 42 a,on the side of the insertion unit 14 a located at the front in thedirection of extension 20 a, has a door handle 44 a which may serve as agripping surface for an operator. The insertion unit 14 a is configuredas a drawer.

The section shown in FIGS. 5 and 6 extends along the cutting plane Vshown in FIG. 1, parallel to one of two side surfaces 46 a, 48 a of theappliance body 10 a.

FIG. 2 shows a perspective view of a detail of the appliance body 10 awhich is partially cut out at the side in order to permit a view into aninterior. The insertion unit 14 a is located in a partially extendedstate. The insertion unit 16 a is located in a fully inserted state.

The insertion unit 14 a has three side walls 50 a, 58 a and 60 a. Thedoor leaf 42 a, the side walls 50 a, 58 a, 60 a and a storage element 66a of the insertion unit 14 a form a box which is open at the top andwhich is provided for storing refrigerated goods. Due to the box-likedesign, a closed region may be advantageously produced in whichrefrigerated goods may be securely stored when the insertion unit 14 ais moved. Via a seal 78 a fastened to the appliance body 10 a aneffective insulation is achieved when the insertion unit 14 a is fullyinserted.

The domestic appliance device contains a coupling unit 80 a whichcouples the insertion unit 14 a to the appliance body 10 a. The couplingunit 80 a has at least one roller rail 22 a and at least one rollerelement 24 a cooperating with the roller rail 22 a. The coupling unit 80a has at least one guide rail 52 a. The guide rail 52 a of the couplingunit 80 a is fastened to a side wall 50 a of the insertion unit 14 a.The guide rail 52 a may cooperate with a further guide rail, not shown,of the coupling unit 80 a fastened to an opposing inner wall of theappliance body 10 a. As a result, an improved fit and increasedstability of the insertion unit 14 a is achieved.

For the person skilled in the art, an embodiment is also conceivable inwhich, for example, a step engages in one or both side walls 32 a, 34 aof the appliance body 10 a below and/or above the insertion unit 14 a.Alternatively, at least one guide rail belonging to the coupling unit 80a is fastened on a lower face of the insertion unit 14 a, the guide railcooperating with a further guide rail fastened to the appliance body 10a and belonging to the coupling unit 80 a. It is also conceivable that agroove of the appliance body 10 a receives a convex portion on the sidewall 50 a of the insertion unit 14 a.

The roller rail 22 a is fastened to a lower lateral edge of theinsertion unit 14 a. When moving the insertion unit 14 a, the rollerrail 22 a moves horizontally across the roller element 24 a. In thiscase, the roller element 24 a is brought into rotation. The rotationtakes place about a fixed rotational axis 82 a. The rotation is producedby a form-locking connection and/or force-locking connection of theroller element 24 a and the roller rail 22 a. A form-locking connectionis one that connects two elements together due to the shape of theelements themselves (e.g. a ball and socket), as opposed to aforce-locking connection, which locks the elements together by forceexternal to the elements (e.g. a screw).

The fastening of the roller element 24 a to the appliance body 10 a isimplemented by a pivot pin element 70 a. The pivot pin element 70 a isadvantageously fixedly connected, in particularly integrally, to theappliance body 10 a. FIG. 4 shows the partial region IV identified inFIG. 3 and thus also the pivot pin element 70 a in an enlarged scale.

In the exemplary embodiment shown, the roller element 24 a is configuredas a toothed wheel. The roller rail 22 a is configured as a toothed rod.The engagement of the teeth of the roller element 24 a and the rollerrail 22 a produces contact without slippage.

The domestic appliance device contains a cover element 30 a whichdivides the storage space 12 a into at least one first partial storagespace 36 a and at least one second partial storage space 38 a. Thedomestic appliance device contains a further cover element 74 a whichdivides the storage space 12 a into at least one second partial storagespace 38 a and at least one third partial storage space 76 a (see FIG.5).

The cover element 30 a covers the entire surface of a cross-sectionthrough the appliance body 10 a. The cover element 30 a entirelyseparates the partial storage space 36 a which is located above from thepartial storage space 38 a which is located below. The cover element 30a is free from holes and/or recesses passing through the cover element30 a. This is visible, in particular, in FIG. 3 in a section through thedomestic appliance device along the plane III shown in FIG. 5, whichextends parallel to the direction of insertion 18 a of the insertionunit 14 a level with the cover element 30 a. The viewing direction ofthe section shown in FIG. 3 extends from bottom to top viewed in theinstallation direction.

The cover element 30 a extends from a first side wall 32 a of theappliance body 10 a to a second side wall 34 a of the appliance body 10a opposing the first side wall 32 a.

A part of the roller element 24 a protrudes vertically beyond a surface56 a of the cover element 30 a. The roller rail 22 a cooperates with thepart of the roller element 24 a protruding from the cover element 30 a.The cover element 30 a is arranged at least partially upstream of theroller element 24 a viewed in the direction of insertion 18 a.

The roller element 24 a, relative to the direction of insertion 18 a, isarranged in a front half of the appliance body 10 a. In the exemplaryembodiment shown, the roller element 24 a is arranged at the front endof the cover element 30 a.

The cover element 30 a has a recess 54 a. The roller element 24 a iscountersunk in this recess 54 a. The recess 54 a represents anindentation in the cover element 30 a. The recess 54 a does not form, inparticular, an opening passing fully through the cover element 30 a. Therecess 54 a is arranged relative to the direction of insertion 18 a in afront half of the appliance body 10 a. In the exemplary embodimentshown, the recess 54 a is arranged at the front end of the cover element30 a.

The recess 54 a is at least partially covered on the side of the coverelement 30 a facing the insertion unit 14 a by a cap element 72 a of thecover element 30 a. The cap element 72 a may preferably be connectedintegrally to the cover element 30 a. Advantageously, the penetration ofdirt into the recess 54 a may be prevented at least partially by the capelement 72 a. Additionally, an increased stability of the cover element30 a may be achieved.

FIG. 3 shows a section viewed from below through the domestic appliancedevice along the cutting axis III shown in FIG. 5. The coupling unit 80a has a further roller rail 26 a in addition to the roller rail 22 a.The roller rail 22 a and the further roller rail 26 a in each case arefastened to the lateral edges of the lower face of the insertion unit 14a. The coupling unit 80 a has a further roller element 28 a on the innerside wall 34 a of the appliance body 10 a, opposing the roller element24 a and the side wall 32 a. The further roller element 28 a is fastenedto the appliance body 10 a. The further roller element 28 a cooperateswith the further roller rail 26 a.

The roller rail 22 a extends over the entire depth of the insertion unit14 a. The further roller rail 26 a extends over the entire depth of theinsertion unit 14 a.

The roller element 24 a and the further roller element 28 a aremechanically coupled together. The mechanical coupling of the rollerelement 24 a with the further roller element 28 a takes place via aconnecting element 68 a of the coupling unit 80 a. The connectingelement 68 a is configured as a connecting rod.

The connecting element 68 a is located inside the cover element 30 a.The connecting element 68 a is located entirely in the recess 54 a ofthe cover element 30 a. The recess 54 a extends over the entire regionbetween the roller element 24 a and the further roller element 28 a. Theconnecting element 68 a transmits a rotational movement from the rollerelement 24 a to the further roller element 28 a and vice versa. Theconnecting element 68 a is rotatably mounted. The connecting element 68a rotates together with the roller element 24 a and the further rollerelement 28 a.

A further exemplary embodiment of the invention is shown in FIG. 6. Thefollowing descriptions are substantially limited to the differencesbetween the exemplary embodiments, wherein relative to components,features and functions which remain the same, reference may be made tothe description of the exemplary embodiment of FIGS. 1 to 5. In order todifferentiate between the exemplary embodiments, the letter a in thereference characters of the exemplary embodiment in FIGS. 1 to 5 isreplaced by the letter b in the reference characters of the exemplaryembodiment of FIG. 6. Relative to components which are denoted the same,in particular relative to components with the same reference characters,in principle reference may also be made to the drawings and/or thedescription of the exemplary embodiment of FIGS. 1 to 5.

FIG. 6 shows a vertical section along a cutting plane V of a furtherexemplary embodiment. A cover element 30 b of the domestic appliancedevice does not fully separate a first partial storage space 36 b of astorage space 12 b from a second partial storage space 38 b of thestorage space 12 b. In this embodiment, the cover element 30 b isconfigured as a transverse bar, the depth thereof being shorter than adepth of the storage space 12 b. A front face of the cover element 30 bis at least substantially flush with a front face of an appliance body10 b. The cover element 30 b, viewed in a direction of insertion 18 b,is arranged upstream of a roller element 24 b belonging to a couplingunit 80 b, so that the roller element 24 b is covered by the coverelement 30 b at the front.

The following is a summary list of reference numerals and thecorresponding structure used in the above description of the invention:

-   10 Appliance body-   12 Storage space-   14 Insertion unit-   16 Insertion unit-   18 Direction of insertion-   20 Direction of extension-   22 Roller rail-   24 Roller element-   26 Roller rail-   28 Roller element-   30 Cover element-   32 wall-   34 Side wall-   36 Partial storage space-   38 storage space-   40 Refrigeration appliance door-   42 Door leaf-   44 Door handle-   46 Side surface-   48 Side surface-   50 Side wall-   52 Guide rail-   54 Recess-   56 Surface-   58 Side wall-   60 Side wall-   62 Door leaf-   64 Door handle-   66 Storage element-   68 Connecting element-   70 Pivot pin element-   72 Cap element-   74 Cover element-   76 Partial storage space-   78 Seal-   80 Coupling unit-   82 Rotational axis

1. A domestic appliance device, comprising: an appliance body definingat least one storage space; at least one insertion unit being movable atleast partially parallel to a direction of insertion into said storagespace and parallel to a direction of extension out of said storagespace; and at least one coupling unit coupling said insertion unit tosaid appliance body and having at least one roller rail and at least oneroller element cooperating with said roller rail, said roller elementfastened to said appliance body.
 2. The domestic appliance deviceaccording to claim 1, wherein said roller element is a toothed wheel andsaid roller rail is a toothed rod.
 3. The domestic appliance deviceaccording to claim 1, wherein said coupling unit contains at least onefurther roller rail and at least one further roller element cooperatingwith said further roller rail.
 4. The domestic appliance deviceaccording to claim 3, wherein said roller element and said furtherroller element are mechanically coupled together.
 5. The domesticappliance device according to claim 1, wherein said roller rail isconnected to a lower face of said insertion unit.
 6. The domesticappliance device according to claim 1, further comprising at least onecover element which, viewed in the direction of insertion, is disposedat least partially upstream of said roller element.
 7. The domesticappliance device according to claim 6, wherein said appliance body a hasa first side wall and a second side wall, said cover element extendsbetween said first side wall of said appliance body and said second sidewall of said appliance body opposing said first side wall.
 8. Thedomestic appliance device according to claim 6, wherein said coverelement forms a part of said appliance body.
 9. The domestic appliancedevice according to claim 6, wherein said cover element divides saidstorage space into at least one first partial storage space and at leastone second partial storage space.
 10. The domestic appliance deviceaccording to claim 9, wherein said roller element is at least partiallyembedded in said cover element.
 11. The domestic appliance deviceaccording to claim 1, wherein relative to the direction of insertion,said roller element is disposed in a first half of said appliance body.12. The domestic appliance device according to claim 1, wherein saidinsertion unit is configured as a drawer.
 13. A domestic refrigerationappliance device, comprising: an appliance body defining at least onestorage space; at least one insertion unit being movable at leastpartially parallel to a direction of insertion into said storage spaceand parallel to a direction of extension out of said storage space; andat least one coupling unit coupling said insertion unit to saidappliance body and having at least one roller rail and at least oneroller element cooperating with said roller rail, said roller elementfastened to said appliance body.